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M365 OneDrive/SharePoint Excessive File Downloads
Sep 19, 2026 · Domain: Cloud Domain: SaaS Domain: Storage Data Source: Microsoft 365 Data Source: Microsoft 365 Audit Logs Data Source: SharePoint Data Source: OneDrive Use Case: Threat Detection Tactic: Collection Tactic: Exfiltration Resources: Investigation Guide Noise: Medium Performance: Normal Rule Type: ES|QL Platform: Microsoft 365 Domain: Email Service: Microsoft SharePoint Service: Microsoft OneDrive ·Identifies when an excessive number of files are downloaded from OneDrive or SharePoint by an authorized user or application in a short period of time. This may indicate a potential data exfiltration event, especially if the downloads are performed using OAuth authentication which could suggest an OAuth phishing attack such as Device Code Authentication phishing.
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